Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
230012excellentexcellent21excellent
220010excellentexcellent21excellent
21006excellentexcellent31excellent
20009excellentexcellent21excellent
19008excellentexcellent11excellent
18007excellentexcellent11excellent
170016excellentexcellent11excellent
160010excellentexcellent11excellent
150010excellentexcellent21excellent
14007excellentexcellent11excellent
13008excellentexcellent21excellent
12009excellentexcellent21excellent
110013excellentexcellent31excellent
100015excellentexcellent31excellent
090015excellentexcellent31excellent
080016excellentexcellent31excellent
070026goodexcellent41excellent
060019excellentexcellent41excellent
050026goodexcellent41excellent
040022goodexcellent51excellent
030031goodexcellent51excellent
020025goodexcellent41excellent
010024goodexcellent41excellent
000025goodexcellent51excellent